CVE-2026-77409

UNKNOWN 0.0

RabbitMQ amqp091-go: Denial of Service via Synchronous Event Channel Blocking

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.dispatch in channel.go, confirms.confirm in confirms.go, and Connection.dispatch0 in connection.go synchronously send publisher confirmations, flow-control events, consumer cancellations, returned messages, including NotifyConfirm events and connection block notifications, to application-provided channels. If a listener channel is unbuffered, full, or not drained promptly, the sole reader goroutine blocks and stops processing frames, acknowledgments, deliveries, and heartbeats. Broker-driven event bursts can therefore cause connection stalls, missed heartbeats, deadlocks, and disconnection. This issue is fixed in version 1.13.0.

CWE	CWE-770
Vendor	rabbitmq
Product	amqp091-go
Published	Sep 16, 2026

Stay Ahead of the Next One

Get instant alerts for rabbitmq amqp091-go

Be the first to know when new unknown vulnerabilities affecting rabbitmq amqp091-go are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

Affected Versions

rabbitmq / amqp091-go

< 1.13.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-wxx3-cj7g-w73j github.com: https://github.com/rabbitmq/amqp091-go/pull/349 github.com: https://github.com/rabbitmq/amqp091-go/commit/5b0ccbb8d7bc3dfa18129d9b0f9256d656809494 github.com: https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0